RCA CTC185AA3, CTC 185, F25209BCTX1 Service Manual

E:fact® Technical Service Data

INDEX

Parts List

Coils & Transformers
Miscellaneous
Controls & Resistors, 2 pages
Capacitors & Electrolytics, 2 pages
Cabinet Parts
Semiconductors, 2 pages

Schematics ................... Location

Television ................. 2A, 2B

Television ................. 2C, 2D

Power Supply .................. 2E

System Control ................. 2F

Tuner ...................... 2G, 2H

Placement Chart

RCA

Models Chassis

F25209BCTX1 CTC185AA3
F25209WTTX1 CTC185AA3
F25211BCTX1 CTC185AA3

SCHEMATIC NOTES

For SAFETY use only equivalent replacement part,

see parts list.

Circuitry not used in some versions.

To purchase a complete paper version
of this service manual, order

®

PHOTOFACT

set #4160

To place the order, contact your local
Sams Distributor or call our Customer
Service operation at 1-800-428-7267.

For E:fact ordering or information,
use the following web site link.

http://www.hwsams.com/efact.html

Product #084160
© Copyright 1999

Howard W. Sams & Co. All rights reserved.

Circuitry used in some versions.
Ground
Chassis ground
Common tie point
Taken from common tie point

3

Schematic voltage source tie point.
Cabling: Heavy lines reduce use of multiple lines.

A

Waveforms and voltages are taken from ground, unless

noted otherwise.

Waveforms taken with triggered scope and keyed rainbow

generator. Waveform voltage is peak to peak. Timebase

is per division. Waveforms shown at 10 divisions.
Supply voltages maintained as seen at input.
Voltages measured with digital meter and a 1000µV RF

signal, with colorbar pattern, applied to antenna terminal.
Controls adjusted for normal operation.
Capacitors are 50 volts or less, 5% or greater unless noted.
Electrolytic capacitors are 50 volts or less,

20% or greater unless noted.
Resistors are 1/2W or less, 5% or greater unless noted.
Value in ( ) used in some versions.
Measurements with switching as shown, unless noted.
Rated voltage shown on zener diodes.

PARTS LIST

COILS & TRANSFORMERS

Item No. Function/Rating Mfr. Part No.

FB3101 Ferrite Bead 226467
FB3901 Ferrite Bead 226467
FB4110, 11 Ferrite Bead 215546
FB4401 Ferrite Bead 227410
FB4501 Ferrite Bead 215547
L2301 15µH 197613
L2302 VCO 215502
L2303 FM Tank 233056
L2305 10µH 175409
L2701, 02, 03 8.2µH 149170
L2705 10µH 175409

# L4000

# L4001 Line Filter 190507

L4102 200µH 231464
L4201 Degaussing 214679
L4201 (2) Degaussing 221042
L4401 2.2µH 190480

# L4402 Horizontal Linearity 193335

L5001 180µH 231467
L7101 - 215507
L7102 - 236641
L7103 - 223929
L7104, 05 - 236642
L7106 - 237456
L7107 - 233057
L7108 - 233074
L7109 3.9µH 200559
L7110 - 233075
L7111 - 233076
L7112 - 231441
L7113 - 233077
L7114 - 231441
L7115 - 233078
L7116 - 237461
L7117 - 237460
L7118 - 237461
L7301 - 231443
L7302 - 231444
L7303 - 233079
L7304 - 233080
L7305 - 236643
L7306 - 231448

# T4301 Horizontal Driver 215541
# T4401 (1) Horizontal Output 242212

Yoke Horiz 1.2mH -

Vert 9.8mH

# For SAFETY use only equivalent replacement part.

(1) Focus and screen controls are part of T4401.
(2) Used in models F25209BCTX1 and F25209WTTX1.

PARTS LIST continued

MISCELLANEOUS

Item No. Description Mfr. Part No. Notes

CF1201 Filter 195702 4.5MHz
CF2301 Trap 181125 4.5MHz

# F4001 Fuse 175425 5A, 125V, Fast Acting

IR3402 Receiver 237682 Remote

# K4201 Relay 190490 Degaussing
# KS5001 Socket 233120 CRT
# P-HORIZ Connector 242206 -

P-VERT Connector 242205 -

# PW4001 Line Cord 215576 AC, Polarized

SF2301 Filter 217318 SAW
SP1902 Speaker 233442 2 1/4" X 3 1/2", 32 Ohms
SW3410 Switch 215500 Channel Up
SW3411 Switch 215500 Power
SW3420 Switch 215500 Channel Down
SW3421 Switch 215500 Volume Up
SW3430 Switch 215500 Menu
SW3431 Switch 215500 Volume Down

# V5000 CRT A63ADT157 A63ADT15X07

Y2801 Crystal 161235 3.58MHz
Y3101 Crystal 217322 8MHz
Y4101 Resonator 227064 507kHz
Y7401 Crystal 230708 4MHz

Transmitter 240959 Remote (CRK10A2)
Transmitter (1) 241036 Remote (CRK74BA3)

# For SAFETY use only equivalent replacement part.

(1) Used in model F25211BCTX1.

PARTS LIST continued

CONTROLS & RESISTORS

Item No. Function/Rating Mfr. Part No. NTE Part No.

# R1907 4.7 5% 1/4W 200197 QW4D7
# R1908 33 5% 2W 196014 2W033

R2302, 03 120K 2% 1/10W 207834 ­R2304, 17 1000 2% 1/10W 197638 ­R2702 7500 2% 1/4W 175761 QW275
R2801 30K 2% 1/10W 200176 ­R2804 27K 2% 1/4W 175326 QW327

# R3108 10 5% 1/4W 241259 QW010

R3111, 12 220 2% 1/4W 175324 QW122
R3202 120K 5% 1/10W - -

120K 2% 1/10W 207834 -

# R4001 2.7 10% 15W Wirewound 190487 -
# R4002 1000 5% 10W Wirewound 231504 10W210
# R4004
# R4103
# R4105 2 5% 1/4W 181419 QW2D0
# R4106 8.2 5% 1W 235378 1W8D2

R4111 100K 1% 1/10W 215221 -

# R4114 10K 5% 3W 189989 3W310
# R4119 10 5% 1/4W 241259 QW010
# R4121 1000 5% 1/2W 175350 HW210
# R4122 2200 5% 1/4W 175042 QW222

R4136 143K 1% 1/4W 184980 ­R4137 2870 1% 1/10W 231505 -

R4142 30K 2% 1/10W 200176 -

# R4146 430 5% 1W 242207 1W143
# R4147 220 5% 3W 231461 3W122
# R4305 3600 5% 3W 181235 3W236
# R4401 15K 5% 1W 190557 1W315
# R4402 91 5% 1/2W 227249 HW091
# R4403 820 5% 1W 175349 1W182
# R4507 1.5 5% 1W 178619 1W1D5
# R4511 1 10% 2W 215577 2W1D0
# R4517 13 5% 1W 231508 1W013
# R4701 10 10% 1/2W 241261 HW010
# R4703 1.8 5% 3W Wirewound 231515 3W1D8
# R4704 82K 10% 1/2W 239116 HW382
# R4705 27K 10% 1/2W 238958 HW327

R4706 1130 1% 1/4W 233070 -

# R4708 3000 5% 1W 200446 1W230
# R4710 3 5% 2W Wirewound 223898 -
# R4901 100 5% 1/4W 198667 QW110
# R4902 28K 1% 1/4W 195731 -
# R4903 32.4K 1% 1/4W 210066 -

R4906 1500 2% 1/10W 197628 -

# R5001, 02, 03 20K 2% 2W 233034 2W320
# R5004, 05, 06 2200 10% 1/10W 502222 -
# R5010 2200 10% 1/10W 502222 -

R5012 270 2% 1/4W 178282 QW127
R5014, 16 300 2% 1/4W 175354 QW130

# R5018

1.8M 10% 1/2W 220333 HW518
.12 5% 2W Wirewound 242202 -

2800 1% 1/10W - -

2200 10% 1/2W 502222 HW222

# For SAFETY use only equivalent replacement part.

PARTS LIST continued

CONTROLS & RESISTORS continued

Item No. Function/Rating Mfr. Part No. NTE Part No.

R5019 6200 2% 1/4W 179316 QW262

7500 2% 1/4W 175761 QW275

R5020 820 2% 1/4W 175043 QW182

680 2% 1/4W 175312 QW168
510 2% 1/4W 240937 QW151
910 2% 1/4W 203097 QW191

# R5021 1200 5% 1W 179782 1W212
# R7139, 40 1.8M 10% 1/2W 220333 HW518

RN4501 Network 215499 -

# RT4201 5.5 Cold PTC 207768 -

# For SAFETY use only equivalent replacement part.